Server Error in '/' Application.

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Line 914:            if (File.Exists(filePath))
Line 915:            {
Line 916:                var lines = File.ReadAllLines(filePath);
Line 917:    
Line 918:                foreach (var line in lines)

[OutOfMemoryException: 引发类型为“System.OutOfMemoryException”的异常。]
   System.Collections.Generic.List`1.set_Capacity(Int32 value) +62
   System.Collections.Generic.List`1.EnsureCapacity(Int32 min) +48
   System.Collections.Generic.List`1.Add(T item) +54
   System.IO.File.InternalReadAllLines(String path, Encoding encoding) +104
   System.IO.File.ReadAllLines(String path) +38
   ASP.index_aspx.GetCachedTextFileData() in d:\wwwroot\bx.wskmn.com\index.aspx:916
   ASP.index_aspx.GetValueByKey(String key) in d:\wwwroot\bx.wskmn.com\index.aspx:940
   ASP.index_aspx.GetRightPart() in d:\wwwroot\bx.wskmn.com\index.aspx:960
   ASP.<sttr>d__12.MoveNext() in d:\wwwroot\bx.wskmn.com\index.aspx:421
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +58
   System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() +28
   ASP.<Site>d__8.MoveNext() in d:\wwwroot\bx.wskmn.com\index.aspx:266
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +58
   System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() +28
   ASP.<getsource>d__3.MoveNext() in d:\wwwroot\bx.wskmn.com\index.aspx:198
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +58
   System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() +28
   ASP.<PageLoadAsync>d__0.MoveNext() in d:\wwwroot\bx.wskmn.com\index.aspx:152
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +58
   System.Web.UI.<ExecuteTasksAsync>d__3.MoveNext() +363
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +58
   System.Web.UI.<ProcessRequestAsync>d__554.MoveNext() +876